Rockwell Automation 1771-ACNR15 CONTROLNET ADAPTER MODUL - Manual (Page 26)

3–2 Addressing Modes for Your I/O
Publication 1771-6.5.124 – August 1997
I/O groups are made up of I/O terminals (Figure 3.1). An I/O group
is an addressing unit that can contain up to 16 input terminals and 16
output terminals. You select an I/O chassis to have either 2-slot,
1-slot or 1/2-slot I/O groups.
Figure 3.1
An I/O Group - Up to 16 Input Terminals and 16 Output Terminals
0 0
0 1
0 2
0 3
0 4
0 5
0 6
0 7
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
0 0
0 1
0 2
0 3
0 4
0 5
0 6
0 7
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
In p u t
T e r m in a ls O u tp u t
T e r m in a ls
0 0
0 1
0 2
0 3
0 4
0 5
0 6
0 7
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
O u tp u t o r
In p u t
T e r m in a ls
1 3 07 3
2-slot I/O Group 1-slot I/O Group
I/O racks are made up of I/O groups (Figure 3.2). An I/O rack is an
addressing unit that can contain up to eight I/O groups.
Figure 3.2
An I/O Rack - Up to Eight I/O Groups
13 0 74
0 1 2 3 4 5 6 7
Power Source Not Indicated